Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/033958
Kind Code:
A1
Abstract:
A power conversion device (100) comprises a rectifier unit (2) that converts a three-phase alternating-current voltage into a direct-current voltage, a power converter (6) that converts the direct-current voltage into an alternating-current voltage to control a motor (7), and a control unit (50), wherein the control unit (50) derives, on the basis of a detection value of the three-phase alternating-current voltage, a pulsation included in the direct-current voltage obtained through the full-wave rectification of the three-phase alternating-current voltage as a predicted pulsating voltage value (ΔVdc*), derives a pulsation included in the direct-current voltage as an actual pulsating voltage measurement value (ΔVdc) on the basis of the detection value of the direct-current voltage, and corrects at least one among a D-axis voltage command (Vd*) or a Q-axis voltage command (Vq*) by means of a voltage correction command (ΔVd*, ΔVq*) generated so as to reduce a deviation between the predicted pulsating voltage valve (ΔVdc*) and the actual pulsating voltage measurement value (ΔVdc).
Inventors:
ISHIKAWA SHUTA (JP)
Application Number:
PCT/JP2022/030234
Publication Date:
February 15, 2024
Filing Date:
August 08, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M7/48; H02M1/14; H02P27/08
Foreign References:
| JP2019041562A | 2019-03-14 | |||
| JP2018057207A | 2018-04-05 | |||
| JP2018137840A | 2018-08-30 |
Attorney, Agent or Firm:
PALMO PATENT FIRM, P.C. (JP)
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